How could I call a CustomAction(js) from .wxs file and assign the returned value to a element?

sajibkumarchaudhury July 15, 2020, 11:13am 1

I want to assign a value to Source by calling a function:
<File Compressed=“” DiskId=“” Vital=“y” Source= “<functionCall()>”
How could I do that?

Topic		Replies	Views
Getting value from custom element? Ask the community code , question	6	1182	January 24, 2022
How to pass a parameter from custom code back to page? Ask the community code , question	2	485	April 7, 2021
Custom element Ask the community code , question	6	439	January 2, 2022
How to call or import code blocks from Tracking Tools & Analytics , Custom code part ? Ask the community code , question	0	51	October 15, 2020
real noob question but what have i done wrong on this button click code.... Ask the community code , question	2	91	February 3, 2019